Washer



March 18 1924. 1,487,610

A. F. SCHATZEL WASHER Filed Sept. 27. 1.922

Patented Mar. 18, 1924.

UNlTED STATES.

} I 1,481,610 PATENT OFFICE.

ALBERT F. SCHATZEL, OF SAN DIEGO, CALIFORNIA, ASSIGNOR OF ONE-HALF 'IO IRV- ING M. SMITH, OF SAN DIEGO, CALIFORNIA.

WASHER.

Application filed September 21, 1922. Serial a... 590,881.

To all whom it may concern:

Be it known that I, ALBERT F. SCHATZEL, a citizen of the United States, residing at San Diego, in the county of San-Diego and State of California, have invented certain new and useful Improvements in Washers, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to washers and has for its object to provide a washer which eliminates the necessity of counter-sinking a hole previous to the insertion of the screw.

It is another object of the invention to provide awasher of this character capable of being applied to the head of any screw, and wherein the counter-sinking operation is accomplished during movement of the screw into the work.

It is also an object of the invention to provide a washer of this character capable of being applied to any screw and constructed to receive the screw head, the washer being constructed in accordance with the shape of the screw head.

It is a further object of the invention to provide a washer of this character adapted to embrace the head portion of a screw, and having cutting means, and also means for engagement with the head of the screw to prevent relative movement oi the washer and the screw.

With these and other objects in view, the invention consists in the improved construction and arrangement of parts to be hereinafter more particularly described, fully claimed and illustrated in the accompanying drawings, in which 2- Figure 1 is a perspective view of a counter-sink washer constructed in accordance with an embodiment of the invention;

Figure 2 is a sectional view showing the device applied to a screw;

Figure 3 is a top plan view of the device applied to a screw;

Fi re 4. is a section of Figure 1; and

Figure 5 is a perspective view of another form of the invention. I

With the present invention both the insertion of the screw and the counter-sinking of the hole is accomplished at the same time. This is possible by the provision of a body member or band 5 which is tapered to the form of a truncatedcone. The body memtaken on the line 4-4 ber has a plurality of cutting members 6 struck therefrom, said cutting members terminating adjacent the upper edge 7 and lower edge 8 of the body member. These cutting members also project outwardly with respect to the outer surface of the body member and in the same direction, the edges of said members being sharpened so that they will cut into the work. These members serve as means for cutting the edge of the screw opening to cause counter-sinking of the screw head.

The upper edge 7 of the body member has a plurality of resilient lugs 9 struck therefrom, said lugs extending inwardly of the body member. The lugs are also arranged in pairs, the lugs of each pair being disposed substantially in alignment with each other. These lugs are intended to enter the slot 10 of the screw 11 so as to substantially lock the washer to the screw and thereby prevent relative movement of the washer and the screw.

In the use of-the device, all that is necessary is to insert the screw in the body member so that the lower face of the screw en gages the inner face of the body member. As shown in Figure 2, one pair of lugs 9 is inserted in the ends of the slot of the screw. The screw may then be driven into the work in the usual manner. When the cutter 6 comes in contact with the work, it will cut the work and form an opening in accordance with the shape of the body member, thereby counter-sinking the screw without requiring the use of a separate tool. As the washer is locked to the screw head there is no possibility of the screw moving independently of the washer.

In Figure 5, a modified form of the invention is shown. This form consists in milling or knurling the outer face of the body member 5 instead of the provision of the cutters. The knurled portion serves as a file to abrade the edge of the screw opening, and thereby ermit counter-sinking of the screw. In this orm the usual lugs 9 are provided for locking the washer to the screw head.

It will be noted that the upper edge 7 of the washer is disposed flush with the head of the screw so that there are no projecting portions above the upper face of the screw head. In addition to this the washer does not require a special make of screw, but may be applied to the conventional type of screws.

As it is compact and simple in construction it may be manufactured in lar quantities from a small amount of materia The pulling power of the screw and its head is not interfered with as the cutting means do not extend to the edges of the washer.

What is claimed is 1. A washer of the character described comprising a band having cuttin means, said band providing a tapered ha y to receive the head portion of a screw.

2. A counter-sink washer consisting of a substantially conical body member having cutting means, said cutting means extending beyond the outer face of the body member, said body member being adapted to receive the head of a screw.

3. A counter-sink washer consisting of a conical body member having cutting means formed therein, said cutting means extending beyond the outer face of the body member, said body member being adapted to receive the head of a screw, and means for connecting said body member to the screw.

4. A counter-sink washer consisting of a conical body member adapted to receive the head of a screw, lugs struck from one edge of said body member and extending inwardly of said body member, certain of said lugs being arranged to enter the slot of the screw head to prevent relative movement of the screw and the washer, and cutting means projecting from the outer face of the body b member.

5. A counter-sink washer consisting of a. conical body member adapted to receive the head of a screw, lu struck from one edge of said body mem er and extendin inwardly of sand body member, certain 0 said lugs being arrangedto enter the slot of the screw head to prevent relative movement of the screw and the washer, and. blades struck from the wall of the body member, said blades terminating adjacent the edges of the body memberv and projecting outwardly of the body member in the same direction.

6. A washer of the character described comprising a band having cutting means, said band being adapted to surround the head portion of a screw, and means for connecting said band to said the screw.

7. A washer of the character described comprising a band said band being adapted to surround. the head portion of a screw, said band being provided with a lug arranged to enter the slot of the screw head to prevent relative movement in one direction of the screw and washer.

having cutting means,

head portion of 8. A washer of the character described I comprising a band having cutting means, said band being adapted to surround the head portion of a screw, said band being provided with 9. lug arranged to enter the slot of the screw head to prevent relative movement of the screw and washer when the screw is rotated in one direction, said lug eing resilient.

In testimony whereof I hereunto aflix my signature.

ALBERT F. SCHATZEL. 

